Results for “Mole”
256 terms · page 6 of 11
Semipermeable Membrane
A barrier that allows solvent molecules to pass while blocking larger solute particles.
Solutions & Colligative PropertiesSolution
A homogeneous mixture in which one or more substances are dispersed uniformly at the molecular or ionic level in another.
Solutions & Colligative PropertiesSolvation
The surrounding and stabilisation of a solute particle by a shell of solvent molecules.
Thermochemistry & ThermodynamicsStandard Enthalpy of Combustion
The enthalpy change when one mole of a substance burns completely in excess oxygen under standard conditions.
Thermochemistry & ThermodynamicsStandard Enthalpy of Formation
The enthalpy change when one mole of a compound forms from its elements in their standard states.
Thermochemistry & ThermodynamicsStandard Molar Entropy
The absolute entropy of one mole of a substance in its standard state at 298 K.
Organic ChemistryStereoisomerism
Isomerism in which molecules have identical connectivity but differ in the spatial arrangement of their atoms.
Stoichiometry & Chemical ReactionsStoichiometry
The quantitative study of the mass and mole relationships between reactants and products in a chemical reaction.
Foundations of ChemistryStructural Formula
A representation showing how the atoms in a molecule are connected and, often, how they are arranged in space.
Stoichiometry & Chemical ReactionsSubstitution Reaction
A reaction in which one atom or group in a molecule is replaced by another.
States of Matter & Gas LawsSurface Tension
The energy required to increase the surface area of a liquid by unit amount, arising from unbalanced intermolecular forces at the surface.
Chemical Bonding & Molecular StructureTetrahedral Geometry
A molecular shape with four bonded atoms directed to the corners of a regular tetrahedron at 109.5°.
Chemical Kinetics & CatalysisThreshold Energy
The minimum total energy that colliding molecules must possess for the collision to be capable of reaction.
Biochemistry & Polymer ChemistryTriglyceride
An ester formed from glycerol and three fatty acid molecules, the main constituent of fats and oils.
Chemical Bonding & Molecular StructureTrigonal Planar Geometry
A flat molecular shape with three bonded atoms arranged around a central atom at 120°.
Chemical Kinetics & CatalysisTurnover Number
The number of substrate molecules converted per catalytic site per unit time.
Analytical Chemistry & SpectroscopyUltraviolet–Visible Spectroscopy
A technique that measures the absorption of ultraviolet and visible light by electronic transitions within molecules.
Chemical EquilibriumUnits of the Equilibrium Constant
The dimensions carried by an equilibrium constant, determined by the change in the number of moles in the balanced equation.
States of Matter & Gas LawsVan der Waals Equation
A modified equation of state that corrects the ideal gas law for molecular volume and intermolecular attraction.
Chemical Bonding & Molecular StructureVan der Waals Forces
The collective name for the weak attractive forces between molecules arising from dipole interactions.
States of Matter & Gas LawsViscosity
A liquid's resistance to flow, arising from internal friction between adjacent layers of molecules.
Chemical Bonding & Molecular StructureVSEPR Theory
The model that predicts molecular shape by arranging valence electron pairs around a central atom so their mutual repulsion is minimised.
Foundations of ChemistryWater of Crystallisation
Water molecules chemically bound within the crystal lattice of a hydrated salt in a fixed stoichiometric ratio.
Biochemistry & Polymer ChemistryZwitterion
A molecule carrying both a positive and a negative charge but no net overall charge.